Samson 4746, Mounting And Operating Instructions

Contents

EB 8365 EN 

 3 

1 

General safety instructions

 .............................................................................5

2 

Design and principle of operation

 ..................................................................6

2.1 

Principle of operation .....................................................................................6

2.1.1 

Type 4746-x Inductive Limit Switch ..................................................................6

2.1.2 

Type 4746-x3 Electric Limit Switch ...................................................................6

2.1.3 

Type 4746-04 Pneumatic Limit Switch ..............................................................6

2.2 

Article code and versions ...............................................................................8

2.3 

Technical data .............................................................................................10

2.4 Accessories .................................................................................................12
2.5 

Summary of explosion protection approvals ...................................................12

3 

Attachment to the valve

 ...............................................................................14

3.1 

Attachment to valve with cast yoke ................................................................14

3.2 

Attachment to valve with rod-type yoke ..........................................................14

3.3 

Attachment to Type 3591 Valve

 .....................................................................16

3.4 

Attachment to positioner ...............................................................................18

4 

Connections

 ................................................................................................19

4.1 

Electrical connection .....................................................................................

19

4.1.1 

Switching amplifier for Type 4746-x2

 ............................................................21

4.2 

Pneumatic connection for Type 4746-04 ........................................................21

5 

Operation

 ...................................................................................................22

5.1 

Adjusting the switching point ........................................................................22

5.1.1 

Type 4746-x2 ..............................................................................................22

5.1.2 

Type 4746-x3 and Type 4746-04

 .................................................................23

6 

Servicing explosion-protected devices

 ..........................................................24

7 

Maintenance and calibration

 .......................................................................24

8 

Dimensions

 .................................................................................................25

9 

Certificates

 ..................................................................................................26